How to Learn More About Decoupled Containment Management Systems?

If people want to learn more about decoupled contient management systems, where should they go? I've been looking at thisa webside is called a headless c m s dot org. It gives you a nice list of different c m ss that are headless or dcoupled. You can just go spin up a sit for free and get an api and justart playing with things. Like you said, spin it up on a week end, because that's what developers like to do.